18361466 has 8 divisors (see below), whose sum is σ = 28492020. Its totient is φ = 8864128.

The previous prime is 18361439. The next prime is 18361477. The reversal of 18361466 is 66416381.

It can be written as a sum of positive squares in 2 ways, for example, as 16851025 + 1510441 = 4105^2 + 1229^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 158231 + ... + 158346.

Almost surely, 2^18361466 is an apocalyptic number.

18361466 is a deficient number, since it is larger than the sum of its proper divisors (10130554).

18361466 is a wasteful number, since it uses less digits than its factorization.

18361466 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 316608.

The product of its digits is 20736, while the sum is 35.

The square root of 18361466 is about 4285.0281212613. The cubic root of 18361466 is about 263.8168016593.

The spelling of 18361466 in words is "eighteen million, three hundred sixty-one thousand, four hundred sixty-six".